18 THE NAUTILUS. 



H. })alllata Say. Probably th roughout the state although I have 

 seen no specimens from localities north of Gratiot County. 



H. palUata alba. Cited by Currier, 



H. mflecta Say , Southern part of the state. 



H. pulehella Mull. Common in the southern part of the state. 

 The costate form does not appear to have been found in the state as 

 yet. It occux-s on Put-in-Bay Island, Lake Erie, and no doubt 

 will eventually be found within our borders. 



H. lahyrbithiea Say. Everywhere in greater or less abundance. 



Pupafallax Say. Cited by Miles. Ann Arbor is the only local- 

 ity from which I have it. 



P. eorticaria Say. Cited by De Camp from Kent County. 



P. armifera Say. Southern part of the state. 



P. contrada Say. Everywhere. Common. 



Vertigo decora Gld. Cited by De Camp from Kent County. 



F. ovata Say. Generally distributed over the state. 



[F. gouldii Binn. Cited by Miles and De Camp. My own cita- 

 tion of 1879 was an error based on a specimen now referred to 

 tridentata.~\ 



F bollesiana Mse. Very generally distributed through the state. 



F ventricosa Mse. Cited by De Camp from lyent County. 



F tridentata Wolf Ann Arbor. 



V. pentodonSny. Common. 



F curvidens Gld. Oakland and Macomb Counties. 



F edentula simplex Gld. Not common but ranges generally 

 over the state. 



T'. milium Gld. Southern part of the state. 



Ferussacia subcylindrica L. Generally distributed over the state. 



Succinea aurea Lea. Cited by De Camp from Kent county. 



S. avara Say. Abundant everywhere. Also cited as S. vermeta 

 Say, by Miles, Currier and De Camp. 



[S. campestris Say. Cited by Sagar, but evidently a mistake for 

 S. obliqua which does not occur in his list. Miles gives obliqua but 

 also gives campestris, probably quoting blindly from Sagar in this 

 as in other instances.] 



S. obliqua Say. Common all over the state. 



S. oval is Gld. Abundant everywhere. This species is occasion- 

 ally infested by a species of Leiicochloridiwn similar to the L. 

 paradoxum Carus, found in the 'S'. putris L. of Europe and figured 

 bv Baudon in Jour, de Conch. V. 27, pi. X, fig. 6. In the same 



